math help question

Question

In a mid-size company, the distribution of the number of phone calls answered each day by each of the 12 receptionists is bell-shaped and has a mean of 62 and a standard deviation of 11. Using the empirical rule (as presented in the book), what is the approximate percentage of daily phone calls numbering between 51 and 73?

Do not enter the percent symbol.

Answer 1

0.68 are between 51 and 73.

73-62=11

62-51 = 11

the empirical rule, 68-95-99.7 says 68% falls within 1 standard deviation from the mean

95% within 2 standard deviations, 99.7% within 3

68%= 0.68